Merge tag 'xfs-6.11-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs updates from Chandan Babu:
 "Major changes in this release are limited to enabling FITRIM on
  realtime devices and Byte-based grant head log reservation tracking.

  The remaining changes are limited to fixes and cleanups included in
  this pull request.

  Core:

   - Enable FITRIM on the realtime device

   - Introduce byte-based grant head log reservation tracking instead of
     physical log location tracking.

     This allows grant head to track a full 64 bit bytes space and hence
     overcome the limit of 4GB indexing that has been present until now

  Fixes:

   - xfs_flush_unmap_range() and xfs_prepare_shift() should consider RT
     extents in the flush unmap range

   - Implement bounds check when traversing log operations during log
     replay

   - Prevent out of bounds access when traversing a directory data block

   - Prevent incorrect ENOSPC when concurrently performing file creation
     and file writes

   - Fix rtalloc rotoring when delalloc is in use

  Cleanups:

   - Clean up I/O path inode locking helpers and the page fault handler

   - xfs: hoist inode operations to libxfs in anticipation of the
     metadata inode directory feature, which maintains a directory tree
     of metadata inodes. This will be necessary for further enhancements
     to the realtime feature, subvolume support

   - Clean up some warts in the extent freeing log intent code

   - Clean up the refcount and rmap intent code before adding support
     for realtime devices

   - Provide the correct email address for sysfs ABI documentation"

* tag 'xfs-6.11-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (80 commits)
  xfs: fix rtalloc rotoring when delalloc is in use
  xfs: get rid of xfs_ag_resv_rmapbt_alloc
  xfs: skip flushing log items during push
  xfs: grant heads track byte counts, not LSNs
  xfs: pass the full grant head to accounting functions
  xfs: track log space pinned by the AIL
  xfs: collapse xlog_state_set_callback in caller
  xfs: l_last_sync_lsn is really AIL state
  xfs: ensure log tail is always up to date
  xfs: background AIL push should target physical space
  xfs: AIL doesn't need manual pushing
  xfs: move and rename xfs_trans_committed_bulk
  xfs: fix the contact address for the sysfs ABI documentation
  xfs: Avoid races with cnt_btree lastrec updates
  xfs: move xfs_refcount_update_defer_add to xfs_refcount_item.c
  xfs: simplify usage of the rcur local variable in xfs_refcount_finish_one
  xfs: don't bother calling xfs_refcount_finish_one_cleanup in xfs_refcount_finish_one
  xfs: reuse xfs_refcount_update_cancel_item
  xfs: add a ci_entry helper
  xfs: remove xfs_trans_set_refcount_flags
  ...

Author: torvalds

Documentation/ABI/testing/sysfs-fs-xfs

@@ -1,7 +1,7 @@
 What:		/sys/fs/xfs/<disk>/log/log_head_lsn
 Date:		July 2014
 KernelVersion:	3.17
-Contact:	xfs@oss.sgi.com
+Contact:	linux-xfs@vger.kernel.org
 Description:
 		The log sequence number (LSN) of the current head of the
 		log. The LSN is exported in "cycle:basic block" format.
@@ -10,30 +10,28 @@ Users:		xfstests
 What:		/sys/fs/xfs/<disk>/log/log_tail_lsn
 Date:		July 2014
 KernelVersion:	3.17
-Contact:	xfs@oss.sgi.com
+Contact:	linux-xfs@vger.kernel.org
 Description:
 		The log sequence number (LSN) of the current tail of the
 		log. The LSN is exported in "cycle:basic block" format.
 
-What:		/sys/fs/xfs/<disk>/log/reserve_grant_head
-Date:		July 2014
-KernelVersion:	3.17
-Contact:	xfs@oss.sgi.com
+What:		/sys/fs/xfs/<disk>/log/reserve_grant_head_bytes
+Date:		June 2024
+KernelVersion:	6.11
+Contact:	linux-xfs@vger.kernel.org
 Description:
 		The current state of the log reserve grant head. It
 		represents the total log reservation of all currently
-		outstanding transactions. The grant head is exported in
-		"cycle:bytes" format.
+		outstanding transactions in bytes.
 Users:		xfstests
 
-What:		/sys/fs/xfs/<disk>/log/write_grant_head
-Date:		July 2014
-KernelVersion:	3.17
-Contact:	xfs@oss.sgi.com
+What:		/sys/fs/xfs/<disk>/log/write_grant_head_bytes
+Date:		June 2024
+KernelVersion:	6.11
+Contact:	linux-xfs@vger.kernel.org
 Description:
 		The current state of the log write grant head. It
 		represents the total log reservation of all currently
 		outstanding transactions, including regrants due to
-		rolling transactions. The grant head is exported in
-		"cycle:bytes" format.
+		rolling transactions in bytes.
 Users:		xfstests

fs/xfs/Kconfig

@@ -217,6 +217,18 @@ config XFS_DEBUG
 
 	  Say N unless you are an XFS developer, or you play one on TV.
 
+config XFS_DEBUG_EXPENSIVE
+	bool "XFS expensive debugging checks"
+	depends on XFS_FS && XFS_DEBUG
+	help
+	  Say Y here to get an XFS build with expensive debugging checks
+	  enabled.  These checks may affect performance significantly.
+
+	  Note that the resulting code will be HUGER and SLOWER, and probably
+	  not useful unless you are debugging a particular problem.
+
+	  Say N unless you are an XFS developer, or you play one on TV.
+
 config XFS_ASSERT_FATAL
 	bool "XFS fatal asserts"
 	default y

fs/xfs/Makefile

@@ -40,6 +40,7 @@ xfs-y				+= $(addprefix libxfs/, \
 				   xfs_iext_tree.o \
 				   xfs_inode_fork.o \
 				   xfs_inode_buf.o \
+				   xfs_inode_util.o \
 				   xfs_log_rlimit.o \
 				   xfs_ag_resv.o \
 				   xfs_parent.o \

fs/xfs/libxfs/xfs_ag.c

@@ -1008,7 +1008,7 @@ xfs_ag_shrink_space(
 			goto resv_err;
 
 		err2 = xfs_free_extent_later(*tpp, args.fsbno, delta, NULL,
-				XFS_AG_RESV_NONE, true);
+				XFS_AG_RESV_NONE, XFS_FREE_EXTENT_SKIP_DISCARD);
 		if (err2)
 			goto resv_err;
 

fs/xfs/libxfs/xfs_ag_resv.h

@@ -33,23 +33,4 @@ xfs_perag_resv(
 	}
 }
 
-/*
- * RMAPBT reservation accounting wrappers. Since rmapbt blocks are sourced from
- * the AGFL, they are allocated one at a time and the reservation updates don't
- * require a transaction.
- */
-static inline void
-xfs_ag_resv_rmapbt_alloc(
-	struct xfs_mount	*mp,
-	xfs_agnumber_t		agno)
-{
-	struct xfs_alloc_arg	args = { NULL };
-	struct xfs_perag	*pag;
-
-	args.len = 1;
-	pag = xfs_perag_get(mp, agno);
-	xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args);
-	xfs_perag_put(pag);
-}
-
 #endif	/* __XFS_AG_RESV_H__ */